Font size in Corporate Gray theme

here is a general approach:
get your html code from the browser – ‘View -> Source’ in IE, or ‘View -> Page Source’ in Firefox.
then search for the text that appears in your post(s).
just before the text, note the tags (the things in pointed brackets, for instance <div ..>.)
check what stands insie the tags, ie. ‘class=”entry”‘ or ‘id=”content”‘ or something like these.
you can then look for these in the style sheet:
class="entry'will show in the style sheet as .entry
id="content" will show as #content
there you shold also find within these brackets { …. } your font-size: or whatever you want to change.
if it is not in there, you can simply add it, followed by a semicolon, example:
.entry { font-size:14px; }

it is also easier to help, if you post a link to your site.

Thanks so much alchymyth! This helps a ton. I’ll give it a try.

For the record, the site is https://www.tuerckfoundation.org/asylum [not sure how to indicate a site properly here – sorry if I violated etiquette]. Now that I look at it the way you suggested, I think I can see how to do it. Stay tuned.

This worked. Thanks so much for your help!